Indoor air quality transmitters User uide Siro & Siro-MOD

Copyright HK Instruments 2021 www.hkinstruments.fi User guide version 1.0 2021

User GuideIndoor air quality transmittersSiro & Siro-MOD

This document contains information about configuring and using Siro indoor air quality transmitter. Before reading this guide, check that the transmitter has been installed according to the installation instruc-tions.

Siro is available with several optional air quality sensors. The modu-lar device can be equipped with CO2 concentration and VOC (Vola-tile Organic Compounds) measurements or alternatively PM (Particu-late Matter) measurement, and in addition temperature and humidity measurements. Siro is available with a user interface that includes an LCD display and three pushbuttons. The device is always equipped with voltage outputs, and optionally with Modbus communication and current outputs.

Introduction

ScHematics

OK

+

–

1

2

3

4

5

1

17 6

1 Air flow aperture

2 Display

3 Pushbutton + (up/increase)

4 Pushbutton OK (choose/confirm)

5 Pushbutton – (down/decrease)

6 Lid opening button

7 Opening for the wires

Navigating the menu

The device's physical interface includes a display and three pushbuttons.By using the user interface, it is possible to choose the desired measurement values on the display and to adjust the settings of the device.Note that when the menu locking jumper is installed, it is not possible to open the menu and the display will not react when pressing the button. Please see the installation instructions for more details about the locking jumper.

The button functions:

+–OK

Scroll up in the menu / increase the value

Scroll down in the menu / decrease the value

Open the menu / confirm (press shortly) / go back to the basic view (keep the button down/press longer)

OK

The use and configuration of Siro is simple and easy by following this guide describing a Siro device with a display (-D).

Please note that this guide includes all measurement options. The device menu only shows the options that have been chosen to that particular device. You can find more information about the measur-ment options in the end of this document.


Menu stRucture

Display valuesCelsius [ ]Fahrenheit [ ]CO2 [ ]Humidity [ ]CO2 EQ [ ]IAQ [ ]PM2.5 hour [ ]PM10 hour [ ]Exit

Brightness

ModbusAddress ( )Baudrate ( )Parity ( )Exit

OutputsOut1 ( )Out2 ( )Out3 ( )Out4 ( )Exit

OffsetCelsius ( )Fahrenheit ( )CO2 ( )Humidity ( )TVOC ppm ( )CO2 EQ ( )TVOC ug/m3 ( )PM ( )Exit

SIRO SW_x_x 1/6x.x.x.x.x.x

Option 1, Option 2, Option 3, Option 4...

Address1...247

Baudrate5760038400192009600

Paritynoneoddeven

Not in useCelsiusFahrenheitCO2HumidityTVOC ppmCO2 EQTVOC ug/m3PM2.5 hourPM10 hourPM2.5 dayPM10 dayPM1PM2.5PM10Exit

Output scale0-10 V2-10 V0-5 V

4-20 mAExit

Low limitX . X

High limitX . X

OffsetCelsius

X . X

OffsetFahrenheit

X . X

OffsetCO2

X

OffsetTVOC ppm

X . XX

OffsetCO2 EQ

X

OffsetTVOC ug/m3

X

Output: 1 2/6Output scale, Option 1Low limit, High limit

Output: 2Output scale, Option 2Low limit, High limit

Output: 3 3/6Output scale, Option 3Low limit, High limit

Output: 4Output scale, Option 4Low limit, High limit

Offset: 4-5/6

Option 1Option 2Option 3Option 4...

Modbus settings: 6/6

Address XBaudrate XParity X

Dis

play

val

ues

Brig

htne

ssM

odbu

sO

utpu

tsO

�set

Info

Exit

OffsetPM coefficient

X . XX

OffsetHumidity

X . X


Step 1: Choosing the measurement values on the display

OK

+

–Celsius [1]Fahrenheit [ ]CO2 [3]Humidity [2]CO2 EQ [ ]IAQ [4]

1

1

2

3

1 2

1 2

3 4

12 3

45

21.1°c 42.3 %RH

CO2

510PPM

TVOCIAQ2

10 s

2) Choose Display values.

Figure 1a

OK

+

–

SettingsDisplay valuesBrightnessOutputs

OK

+

–

CelsiusFahrenheitCO2Humidity

[1][ ][3][2]

CO2 EQIAQExit

[ ][4]

The basic view on the display is scaled based on how many measurement values have been chosen to be viewed on the display. 1-4 measurement values can be shown simultaneously (see figure 1a). If five or more values are selected, the measurements are shown one by one and the view changes every 10 seconds. Individual measurements can be scrolled in the basic view with and buttons. If the buttons are unused for 30 minutes, the basic view will reappear automatically.

+–

1) Press to enter the settings menu.OK

3) Choose the desired measurement values to be shown on the display.

• Scroll the menu by pressing the and buttons.• Add/remove the desired measurement values by

pressing the button.

–+

OK

OK

+

–

HumidityCO2 EQIAQExit

[2][ ][4]

Step 1.1: Display view

Step 1.2: Choosing the measurement values

4) Choose Exit to exit the menu.• Scroll the menu to Exit and press to return

to the settings menu or keep the button down to return to the basic view.

OK

OK

Figure 1b

For more information about the measurements, please see page 8.

Figure 1c

Figure 1d


Step 2: Brightness control

2) Choose Brightness.


OK

+

–

SettingsDisplay values

BrightnessModbus

3) Adjust the brightness.• Increase/decrease the brightness by pressing

and .+

– OK

+

–

Brightness

4) Saving the chosen brightness level and exiting.• Save the brighness level and return to the settings

menu by pressing the button or keep the button down to return to the basic view.

• The chosen brightness level will settle when the buttons have been unpressed for 30 seconds.

OKOK

Step 3: Modbus settings (Modbus devices only)

2) Choose Modbus.


OK

+

–

SettingsDisplay values

BrightnessModbus

OK

+

–

ModbusAddress 1Baudrate 9600Parity none

OK

+

–

Address

1

Address: 1 – 247 (default = 1)Baud rate: 9600 / 19200 / 38400 / 57600Parity: none / even / odd

OK

+

–

Baudrate

9600

OK

+

–

Parity

none

4) Choose Exit to exit the Modbus menu.• Scroll to Exit and press to return to the

settings menu or keep the button down to return to the basic view.

OK

OK OK

+

–

Modbus

Exit

Baudrate 9600Parity none

3) Choose the desired parameters in the Modbus menu.• The parameters can be scrolled by pressing the

and buttons and chosen by pressing .+

– OK

Figure 2a

Figure 2b

Figure 3a

Figure 3b

Figure 3c

This adjusts the brightness of the display in stand-by mode. The brightness of the display is always at the maximun level when the buttons are used.


Step 4: Outputs

2) Choose Outputs.


The device includes four freely configurable outputs. Current (optional) or voltage output can be chosen for each of them. The output signal has to be chosen first with a jumper (see the installation instructions), after which the output settings can be changed in the Outputs menu.

OK

+

–

SettingsBrightness

ModbusOutputs

Measurement: Not in use / Celsius 1* / Fahrenheit 1* / CO2 / Humidity / TVOC ppm 2* / CO2 EQ / TVOC ug/m3 2* / PM2.5 hour / PM10 hour / PM2.5 day / PM10 day / PM1 / PM2.5 / PM10 1*) Only one of these can be chosen for outputs.

2*) Only one of these can be chosen for outputs.

OK

+

–

OutputsOut1 CelsiusOut2 HumidityOut3 Not in use

OK

+

–

Not in useCO2TVOC ppmCO2 EQ

Scale: 0–10 V / 2–10 V / 0–5 V 1* / 4–20 mA 2*

1*) When using voltage output, the jumper

setting of that output must be set to V.

2*) When using current output, the jumper

setting of that output must be set to mA.

High limit: See Table 1 - Output limits

Low limit: See Table 1 - Output limits

OK

+

–

Output scale0-10V2-10V0-5V

OK

+

–

Low limitCO2

400

OK

+

–

High limitCO2

2000

Figure 4a

Figure 4b3) Choose measurement, scale and limits for each output.

• The menus and limits can be scrolled by pressing the and buttons. Choose the measurement and scale and set the limits by pressing the button.

+–

OK


Step 5: Offset


2) Choose Offset.

OK

+

–

SettingsModbus

OffsetOutputs

4) Choose Exit to exit the Outputs menu.• Scroll to Exit and press to return to the


OK

OK OK

+

–

OutputsOut3 CO2Out4 TVOC ug/m3Exit

Figure 4c

Measurement Default limits Adjustable low limit Adjustable high limit Smallest range available

Celsius 1* 0.0...50.0 °C 0.0...45.0 °C 5.0...50.0 °C 5.0 °CFahrenheit 1* 32...122 °F 32...113 °F 41...122 °F 9 °FCO2 400...2000 ppm 0...1900 ppm 500…2000 ppm 100 ppmHumidity 0.0…100.0 % 0.0…90.0 % 10.0…100.0 % 10.0 %TVOC ppm 0.00…30.00 ppm 0.00…28.00 ppm 2.00…30.00 ppm 2.00 ppmCO2 EQ 400...2000 ppm 0...9900 ppm 500…10000 ppm 100 ppmTVOC µg/m3 0…3000 μg/m3 0…9900 µg/m3 100…10000 µg/m3 100 µg/m3PM (all) 2* 0...500 μg/m3 0...480 μg/m3 20…500 μg/m3 20 μg/m3

Table 1 - Output limits

Outputs continued

OK

+

–

Offset

CO2 0

Celsius 0.0Fahrenheit 0.0

OK

+

–

OffsetCelsius

2.0

Figure 5a

Figure 5b3) Choose offset value for every measurement.

• The Offset menu and limits can be scrolled by pressing the and buttons. Choose the measurement and set the limits by pressing the button.

See Table 2 - Offset limits.

+ –OK

The offset feature enables field calibration. This is necessary in applications that need annual calibration.

1*) Celsius and Fahrenheit limits are interdependent, and thus a change in one limit of a measurement will also change the

limits of the other measurement.

2*) PM2.5, PM2.5 hour and PM2.5 day share the same limits.

PM10, PM10 hour and PM10 day share the same limits.

Changing one limit will also change the limits of the two other measurements.


Step 6: Info view


Offset Continued

Measurement Limit

Celsius 1* ±5.0 °CFahrenheit 1* ±9.0 °FCO2 ±200 ppmHumidity ±10.0 %TVOC ppm ±3.00 ppmCO2 EQ ±200 ppmTVOC ug/m3 2* ±1000 µg/m3PM 3* 0.30…2.00 (offset multiplier)

4) Choose Exit to exit the Offset menu.• Scroll to Exit and press to return to the


OK

OK

Table 2 - Offset limits

OK

+

–

OffsetCO2 EQ 0TVOC ug/m3 220Exit

Figure 5c

Info view is a summary of the information and settings of the device.

OK

+

–

SettingsOutputs

InfoOffset

Figure 6a

OK

+

–

SIRO SW_x_x 1/6x.x.x.x.x.x

Temperature,HumidityCO2,TVOC

OK

+

–

Output: 1 2/60-10V, CelsiusMin 2.0 Max 45.0

Output: 20-10V, HumidityMin 0.0 Max 95.0

OK

+

–

Output: 3 3/60-10V, CO2Min 0 Max 2000

Output: 40-10V, TVOC ug/m3Min 0 Max 10000

OK

+

–

Offset: 4/6

Celsius 2.0Fahrenheit 3.6CO2 0Humidity 2.0

OK

+

–

Offset: 5/6

TVOC ppm 0.00CO2 EQ 0TVOC ug/m3 200

2) Choose Info.• Scroll by pressing and .

Page 1: Version number and buildup of the device.Page 2-3: OutputsPage 4-5: OffsetsPage 6: Modbus settings (Modbus devices only)*

+ –

OK

+

–

Modbus settings: 6/6

Address 1Baudrate 9600Parity none

*

3) Press to exit the Info view.• Press to return to the settings menu or

keep the button down to return to the basic view.

OK

OK

OK

1*) Celsius and Fahrenheit limits are interdependent, and thus a change in one limit of a measurement will also change the limits of the other measurement.

2*) TVOC µg/m3 offset will also affect the IAQ value based on TVOC.

3*) PM offset will also affect the IAQ value based on PM.


Information about the measurements

Measurement Text in the Siro user interface

Description Unit

T (Temperature) Celsius Temperature ⁰C

Fahrenheit Temperature ⁰F

rH (Relative humidity) Humidity Relative humidity %rH

CO2 (Carbon dioxide) CO2 Carbon dioxide concentration ppm

VOC (Volatile Organic Compounds)*

TVOC ppm Total concentration of organic volatile compounds ppm

TVOC ug/m3 Total concentration of organic volatile compounds µg/m3

CO2 EQ Organic volatile compounds value converted into CO2 equivalent ppm

IAQ Indoor air quality index, based on TVOC µg/m3 concentration, see Table 4 1-5,emoticon

PM (Particulate Matter) PM2.5 hour 1-hour mean of particulate matter concentration for particulates with diameter under 2.5 µm

µg/m3

PM10 hour 1-hour mean of particulate matter concentration for particulates with diameter under 10 µm

µg/m3

PM2.5 day 24-hour mean of particulate matter concentration for particulates with diameter under 2.5 µm

µg/m3

PM10 day 24-hour mean of particulate matter concentration for particulates with diameter under 10 µm

µg/m3

PM1 Momentary value of particulate matter concentration for particulates with diameter under 1 µm

µg/m3

PM2.5 Momentary value of particulate matter concentration for particulates with diameter under 2.5 µm

µg/m3

PM10 Momentary value of particulate matter concentration for particulates with diameter under 10 µm

µg/m3

IAQ Indoor air quality index, based on hourly average of PM2.5, see Table 5 1-5,emoticon

TVOC IAQ

IAQ level TVOC [µg/m3] Air quality

1 <300 Very good

2 300 – 1 000 Good

3 1 000 – 3 000 Moderate

4 3 000 – 10 000 Bad

5 >10 000 Very bad

PM IAQ

IAQ levelPM2.5 1h avg.

[µg/m3]Air quality

1 <25 Very good

2 26 - 37 Good

3 38-50 Moderate

4 51-75 Bad

5 >75 Very badBased on the German Environment Agency (UBA) reasearch. Based on the World Health Organization (WHO) research

and hourly average of PM2.5 concentration.

Table 3 - Additional information about the measurements

Table 4 - TVOC levels Table 5 - PM levels

*VOC sensor is tuned for typical IAQ Mix of 22 VOCs as defined by Mølhave et al. (1997)

Indoor air quality transmitters User uide Siro & Siro-MOD

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